Customer Ratings & Reviews

This 5W20 SS Oil is the best long lasting Oil I’ve ever used! I have Two 2005 Ford E-250 Box Trucks and both have over 400,000 miles. I have noticed cold start chatter GONE! These trucks restart 10 to 15 times a day Thanks to Amsoil I look forward to seeing 1,000,000. Miles in the future. Life User Henry J

The best oil and filters you can buy.

When I started doing my own oil changes(10 years ago) I switched to this. in my experience my other maintenance costs have mostly disappeared.

When I started doing my own oil changes(10 years ago) I switched to this. in my experience my other maintenance costs have mostly disappeared.

I have used this for years. It has never let me down.

Great oil. Runs cool in my Subaru wrx. Extremely good cold starts. Even when I get on the car it sounds healthier

I have been using AMSOIL products for 39 years. This oil product works perfectly in my 2017 Honda Accord. The fuel economy improves when using AMSOIL. The appearance of any wear is minimal. There is virtually no oil consumption.

I have been using AMSOIL for 39 years. This is used in my 2018 Ford Expedition Max with the 3.5 liter, 400 hp engine. I tow significantly a 7000 pounds loaded trailer. Excellent mileage, 9.2 towing; 20.5 solo during travel. No oil consumption. Smooth power. Cool running. What is not to like.

Great quality oil. Project Farm approved!

great product will continue to use.

I've been running the Amsoil for only about 2 months in a Gen 5 4Runner and only really city miles. BUT after 4 years of using Royal Purple, which I have had no real complaints with, I tried teh Amsoil and have seen a difference. Not a huge amount maybe, but big enough for someone who does their own oil changes and was using Royal Purple. It's a big enough difference for me. Less knocking during acceleration and just smoother in general. I'll see how it does since it's recommended for at least two oil changes....

Amsoil has always been good to me. I change my oil every 5000 miles on my motorcycle. Also on three of my vehicles. Great products.I like their gun cleaning solvents also.

The name speaks for itself. Proven and tested (follow the science) to be a top notch motor oil. Its all I use in my street rod and daily driver.

My engine is immortal. My oil slightly ambered yet stil tacky and the American is only because of Amsoil too cleaning performance and the engine was cleaned with sea foam and drained but had sticsion build up some internal on engine now it’s shiny clean. Amsoil is the best

i've been using Amsoil for a long time on my semi truck and i like it ,then i decided to use it on my pick up truck too . So far one of the best

Using amsoil for years with no issues. All my vehicles average 400000miles with no engine or transmission issues.

After changing to this oil my mpg improved by 1mpg. This is the best oil I found with all the research I done. I picked this as I do a lot of off and on of the engine and want the best protection of the start up of the engine where most wear is done.